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                    Introduction
            
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                    2.进程管理之进程与线程
            
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                    5.内存管理之基本概念
            
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                    6.内存管理之虚拟内存
            
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                    7.IO设备管理之基本概念
            
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                    3.数据链路层
            
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                    4.网络层(一)
            
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                    5.网络层(二)
            
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                    6.传输层
            
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                    7.应用层(⭐)
            
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                    8.HTTP相关及发展
            
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                    面试题总结一
            
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                    1.图论
            
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                    2.图论例题
            
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                    3.散列表
            
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                    4.排序算法
            
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                    5.排序算法例题
            
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                    数据结构模板
            
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                    leetCode周赛记录
            
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                    1.时间复杂度
            
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                    2.深度优先搜索算法
            
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                    2.深搜题目集
            
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                    3.广度优先搜索算法
            
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                    1.jvm内存结构
            
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                    6.类文件结构.md
            
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                    7.类加载机制.md
            
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                    8.逃逸分析技术
            
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                    1.多线程学习路线图
            
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                    2.java内存模型与线程
            
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                    2.并行程序基础
            
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                    3.happenBefore与jvm指令重排序
            
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                    4.synchronized与volatile.md
            
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                    5.ThreadLocal.md
            
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                    6.乐观锁与悲观锁.md
            
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                    7.CAS与atomic类.md
            
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                    8.AQS.md
            
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                    9.基于AQS的并发工具.md
            
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                    10.阻塞队列.md
            
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                    11.线程池与底层原理.md
            
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                    12.面试题一
            
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                    13.面试题二.md
            
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                    1.集合架构
            
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                    2.hashMap底层原理
            
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                    3.ConcurrentHashMap分析
            
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                    1.创造型模式
            
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                    三种工厂模式
            
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                    实战工厂模式
            
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                    实战抽象工厂模式
            
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                <a href="../数据库/mysql/1.b树b+树的底层原理.html">
            
                    
                    1.mysql索引基础之b树与b+树⭐⭐
            
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                    2.mysql索引及优化⭐⭐⭐⭐
            
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        <li class="chapter " data-level="9.3" data-path="../数据库/mysql/3.mysql存储引擎.html">
            
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                    3.mysql存储引擎.md
            
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                    4.多版本并发控制之mvcc原理
            
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        <li class="chapter " data-level="9.5" data-path="../数据库/mysql/4.mysql事务.html">
            
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                    5.mysql事务
            
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        <li class="chapter " data-level="9.6" data-path="../数据库/mysql/5.mysql锁机制.html">
            
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                    6.mysql的锁机制
            
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                    7.mysql面试题一
            
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                    2.服务熔断
            
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                    3.服务降级
            
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                                <div id="anchor-navigation-ex-navbar"><i class="fa fa-navicon"></i><ul><ul><li><span class="title-icon "></span><a href="#0-&#x601D;&#x7EF4;&#x5BFC;&#x56FE;"><b></b>0 &#x601D;&#x7EF4;&#x5BFC;&#x56FE;</a></li><li><span class="title-icon "></span><a href="#&#x4E00;-io&#x8BBE;&#x5907;&#x5B9A;&#x4E49;"><b></b>&#x4E00; IO&#x8BBE;&#x5907;&#x5B9A;&#x4E49;</a></li><ul><li><span class="title-icon "></span><a href="#&#x4E00;-&#x5B9A;&#x4E49;"><b></b>(&#x4E00;) &#x5B9A;&#x4E49;</a></li><li><span class="title-icon "></span><a href="#&#x4E8C;-&#x5206;&#x7C7B;"><b></b>(&#x4E8C;) &#x5206;&#x7C7B;</a></li></ul><li><span class="title-icon "></span><a href="#&#x4E8C;--io-&#x63A7;&#x5236;&#x5668;"><b></b>&#x4E8C;  I/O &#x63A7;&#x5236;&#x5668;</a></li><ul><li><span class="title-icon "></span><a href="#io&#x8BBE;&#x5907;&#x7684;&#x7EC4;&#x6210;"><b></b>I/O&#x8BBE;&#x5907;&#x7684;&#x7EC4;&#x6210;:</a></li><li><span class="title-icon "></span><a href="#io&#x63A7;&#x5236;&#x5668;&#x7684;&#x529F;&#x80FD;"><b></b>I/O&#x63A7;&#x5236;&#x5668;&#x7684;&#x529F;&#x80FD;:</a></li><li><span class="title-icon "></span><a href="#io&#x63A7;&#x5236;&#x5668;&#x7684;&#x7EC4;&#x6210;"><b></b>I/O&#x63A7;&#x5236;&#x5668;&#x7684;&#x7EC4;&#x6210;:</a></li></ul><li><span class="title-icon "></span><a href="#&#x4E09;-os-&#x63A7;&#x5236;-io-&#x8BBE;&#x5907;&#x7684;&#x65B9;&#x5F0F;"><b></b>&#x4E09; OS &#x63A7;&#x5236; I/O &#x8BBE;&#x5907;&#x7684;&#x65B9;&#x5F0F;</a></li><ul><li><span class="title-icon "></span><a href="#&#x4E00;-&#x7A0B;&#x5E8F;&#x76F4;&#x63A5;&#x63A7;&#x5236;&#x65B9;&#x5F0F;"><b></b>(&#x4E00;) &#x7A0B;&#x5E8F;&#x76F4;&#x63A5;&#x63A7;&#x5236;&#x65B9;&#x5F0F;</a></li><li><span class="title-icon "></span><a href="#&#x4E8C;-&#x4E2D;&#x65AD;&#x9A71;&#x52A8;&#x65B9;&#x5F0F;"><b></b>(&#x4E8C;) &#x4E2D;&#x65AD;&#x9A71;&#x52A8;&#x65B9;&#x5F0F;</a></li><li><span class="title-icon "></span><a href="#&#x4E09;dma&#x65B9;&#x5F0F;"><b></b>(&#x4E09;)DMA&#x65B9;&#x5F0F;</a></li><li><span class="title-icon "></span><a href="#&#x56DB;-&#x901A;&#x9053;&#x63A7;&#x5236;&#x65B9;&#x5F0F;"><b></b>(&#x56DB;) &#x901A;&#x9053;&#x63A7;&#x5236;&#x65B9;&#x5F0F;</a></li></ul><li><span class="title-icon "></span><a href="#&#x56DB;-io-&#x5B50;&#x7CFB;&#x7EDF;&#x7684;&#x5C42;&#x6B21;&#x7ED3;&#x6784;"><b></b>&#x56DB; I/O &#x5B50;&#x7CFB;&#x7EDF;&#x7684;&#x5C42;&#x6B21;&#x7ED3;&#x6784;</a></li><ul><li><span class="title-icon "></span><a href="#&#x4E00;-&#x7528;&#x6237;&#x8F6F;&#x4EF6;&#x5C42;"><b></b>(&#x4E00;) &#x7528;&#x6237;&#x8F6F;&#x4EF6;&#x5C42;</a></li><li><span class="title-icon "></span><a href="#&#x4E8C;-&#x8BBE;&#x5907;&#x72EC;&#x7ACB;&#x6027;&#x8F6F;&#x4EF6;"><b></b>(&#x4E8C;) &#x8BBE;&#x5907;&#x72EC;&#x7ACB;&#x6027;&#x8F6F;&#x4EF6;</a></li><li><span class="title-icon "></span><a href="#&#x4E09;-&#x8BBE;&#x5907;&#x9A71;&#x52A8;&#x7A0B;&#x5E8F;"><b></b>(&#x4E09;) &#x8BBE;&#x5907;&#x9A71;&#x52A8;&#x7A0B;&#x5E8F;</a></li><li><span class="title-icon "></span><a href="#&#x56DB;-&#x4E2D;&#x65AD;&#x5904;&#x7406;&#x7A0B;&#x5E8F;"><b></b>(&#x56DB;) &#x4E2D;&#x65AD;&#x5904;&#x7406;&#x7A0B;&#x5E8F;</a></li></ul></ul></ul></div><a href="#" id="anchorNavigationExGoTop"><i class="fa fa-arrow-up"></i></a><h2 id="0-&#x601D;&#x7EF4;&#x5BFC;&#x56FE;"><a name="0-&#x601D;&#x7EF4;&#x5BFC;&#x56FE;" class="anchor-navigation-ex-anchor" href="#0-&#x601D;&#x7EF4;&#x5BFC;&#x56FE;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="0-&#x601D;&#x7EF4;&#x5BFC;&#x56FE;" class="plugin-anchor" href="#0-&#x601D;&#x7EF4;&#x5BFC;&#x56FE;"><i class="fa fa-link" aria-hidden="true"></i></a>0 &#x601D;&#x7EF4;&#x5BFC;&#x56FE;</h2>
<p><img src="https://gitee.com/zisuu/picture/raw/master/img/20201124195455.png" alt="image-20201124195455163"></p>
<h2 id="&#x4E00;-io&#x8BBE;&#x5907;&#x5B9A;&#x4E49;"><a name="&#x4E00;-io&#x8BBE;&#x5907;&#x5B9A;&#x4E49;" class="anchor-navigation-ex-anchor" href="#&#x4E00;-io&#x8BBE;&#x5907;&#x5B9A;&#x4E49;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x4E00;-io&#x8BBE;&#x5907;&#x5B9A;&#x4E49;" class="plugin-anchor" href="#&#x4E00;-io&#x8BBE;&#x5907;&#x5B9A;&#x4E49;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x4E00; IO&#x8BBE;&#x5907;&#x5B9A;&#x4E49;</h2>
<h3 id="&#x4E00;-&#x5B9A;&#x4E49;"><a name="&#x4E00;-&#x5B9A;&#x4E49;" class="anchor-navigation-ex-anchor" href="#&#x4E00;-&#x5B9A;&#x4E49;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x4E00;-&#x5B9A;&#x4E49;" class="plugin-anchor" href="#&#x4E00;-&#x5B9A;&#x4E49;"><i class="fa fa-link" aria-hidden="true"></i></a>(&#x4E00;) &#x5B9A;&#x4E49;</h3>
<p>I/O &#x5C31;&#x662F;&#x8F93;&#x5165;&#x8F93;&#x51FA;</p>
<p>I/O&#x8BBE;&#x5907;&#x5C31;&#x662F;&#x53EF;&#x4EE5;&#x5C06;&#x6570;&#x636E;&#x8F93;&#x5165;&#x5230;&#x8BA1;&#x7B97;&#x673A;,&#x6216;&#x8005;&#x63A5;&#x6536;&#x8BA1;&#x7B97;&#x673A;&#x8F93;&#x51FA;&#x6570;&#x636E;&#x7684;&#x5916;&#x90E8;&#x8BBE;&#x5907;,&#x5C5E;&#x4E8E;&#x8BA1;&#x7B97;&#x673A;&#x7684;&#x786C;&#x4EF6;</p>
<h3 id="&#x4E8C;-&#x5206;&#x7C7B;"><a name="&#x4E8C;-&#x5206;&#x7C7B;" class="anchor-navigation-ex-anchor" href="#&#x4E8C;-&#x5206;&#x7C7B;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x4E8C;-&#x5206;&#x7C7B;" class="plugin-anchor" href="#&#x4E8C;-&#x5206;&#x7C7B;"><i class="fa fa-link" aria-hidden="true"></i></a>(&#x4E8C;) &#x5206;&#x7C7B;</h3>
<p>1.&#x6309;&#x4F7F;&#x7528;&#x7279;&#x6027;&#x5206;&#x7C7B;:</p>
<ul>
<li><p>&#x4EBA;&#x673A;&#x4EA4;&#x4E92;&#x7C7B;&#x5916;&#x90E8;&#x8BBE;&#x5907;&#xFF1A;&#x7528;&#x4E8E;&#x540C;&#x8BA1;&#x7B97;&#x673A;&#x7528;&#x6237;&#x4E4B;&#x95F4;&#x4EA4;&#x4E92;&#x7684;&#x8BBE;&#x5907;&#xFF0C;&#x5982;&#x6253;&#x5370;&#x673A;&#x3001;&#x663E;&#x793A;&#x5668;&#x3001;&#x9F20;&#x6807;&#x3001;&#x952E;&#x76D8;&#x7B49;&#x3002;&#x8FD9;&#x7C7B;&#x8BBE;&#x5907;&#x6570;&#x636E;&#x4EA4;&#x6362;&#x901F;&#x5EA6;&#x76F8;&#x5BF9;&#x8F83;&#x6162;&#xFF0C;&#x901A;&#x5E38;&#x662F;&#x4EE5;&#x5B57;&#x8282;&#x4E3A;&#x5355;&#x4F4D;&#x8FDB;&#x884C;&#x6570;&#x636E;&#x4EA4;&#x6362;&#x3002;</p>
</li>
<li><p>&#x5B58;&#x50A8;&#x8BBE;&#x5907;&#xFF1A;&#x7528;&#x4E8E;&#x5B58;&#x50A8;&#x7A0B;&#x5E8F;&#x548C;&#x6570;&#x636E;&#x7684;&#x8BBE;&#x5907;&#xFF0C;&#x5982;&#x78C1;&#x76D8;&#x3001;&#x78C1;&#x5E26;&#x3001;&#x5149;&#x76D8;&#x7B49;&#x3002;&#x8FD9;&#x7C7B;&#x8BBE;&#x5907;&#x7528;&#x4E8E;&#x6570;&#x636E;&#x4EA4;&#x6362;&#xFF0C;&#x901F;&#x5EA6;&#x8F83;&#x5FEB;&#xFF0C;&#x901A;&#x5E38;&#x4EE5;&#x591A;&#x5B57;&#x8282;&#x7EC4;&#x6210;&#x7684;&#x5757;&#x4E3A;&#x5355;&#x4F4D;&#x8FDB;&#x884C;&#x6570;&#x636E;&#x4EA4;&#x6362;&#x3002;</p>
</li>
<li>&#x7F51;&#x7EDC;&#x901A;&#x4FE1;&#x8BBE;&#x5907;&#xFF1A;&#x7528;&#x4E8E;&#x4E0E;&#x8FDC;&#x7A0B;&#x8BBE;&#x5907;&#x901A;&#x4FE1;&#x7684;&#x8BBE;&#x5907;&#xFF0C;&#x5982;&#x5404;&#x79CD;&#x7F51;&#x7EDC;&#x63A5;&#x53E3;&#x3001;&#x8C03;&#x5236;&#x89E3;&#x8C03;&#x5668;&#x7B49;&#x3002;&#x5176;&#x901F;&#x5EA6;&#x4ECB;&#x4E8E;&#x524D;&#x4E24;&#x7C7B;&#x8BBE;&#x5907;&#x4E4B;&#x95F4;&#x3002;&#x7F51;&#x7EDC;&#x901A;&#x4FE1;&#x8BBE;&#x5907;&#x5728;&#x4F7F;&#x7528;&#x548C;&#x7BA1;&#x7406;&#x4E0A;&#x4E0E;&#x524D;&#x4E24;&#x7C7B;&#x8BBE;&#x5907;&#x4E5F;&#x6709;&#x5F88;&#x5927;&#x4E0D;&#x540C;&#x3002;</li>
</ul>
<p>2 . &#x6309;&#x4F20;&#x8F93;&#x901F;&#x7387;&#x5206;&#x7C7B;&#xFF1A;</p>
<ul>
<li>&#x4F4E;&#x901F;&#x8BBE;&#x5907;&#xFF1A;&#x4F20;&#x8F93;&#x901F;&#x7387;&#x4EC5;&#x4E3A;&#x6BCF;&#x79D2;&#x51E0;&#x4E2A;&#x5230;&#x6570;&#x767E;&#x4E2A;&#x5B57;&#x8282;&#x7684;&#x4E00;&#x7C7B;&#x8BBE;&#x5907;&#xFF0C;&#x5982;&#x952E;&#x76D8;&#x3001;&#x9F20;&#x6807;&#x7B49;&#x3002;</li>
<li>&#x4E2D;&#x901F;&#x8BBE;&#x5907;&#xFF1A;&#x4F20;&#x8F93;&#x901F;&#x7387;&#x5728;&#x6BCF;&#x79D2;&#x6570;&#x5343;&#x4E2A;&#x5B57;&#x8282;&#x81F3;&#x6570;&#x4E07;&#x4E2A;&#x5B57;&#x8282;&#x7684;&#x4E00;&#x7C7B;&#x8BBE;&#x5907;&#xFF0C;&#x5982;&#x884C;&#x5F0F;&#x6253;&#x5370;&#x673A;&#x3001; &#x6FC0;&#x5149;&#x6253;&#x5370;&#x673A;&#x7B49;&#x3002;</li>
<li>&#x9AD8;&#x901F;&#x8BBE;&#x5907;&#xFF1A;&#x4F20;&#x8F93;&#x901F;&#x7387;&#x5728;&#x6570;&#x767E;&#x4E2A;&#x5343;&#x5B57;&#x8282;&#x81F3;&#x5343;&#x5146;&#x5B57;&#x8282;&#x7684;&#x4E00;&#x7C7B;&#x8BBE;&#x5907;&#xFF0C;&#x5982;&#x78C1;&#x5E26;&#x673A;&#x3001;&#x78C1;&#x76D8;&#x673A;&#x3001; &#x5149;&#x76D8;&#x673A;&#x7B49;&#x3002;</li>
</ul>
<ol>
<li><p>&#x6309;&#x4FE1;&#x606F;&#x4EA4;&#x6362;&#x7684;&#x5355;&#x4F4D;&#x5206;&#x7C7B;&#xFF1A;</p>
</li>
<li><p>&#x5757;&#x8BBE;&#x5907;&#xFF1A;&#x7531;&#x4E8E;&#x4FE1;&#x606F;&#x7684;&#x5B58;&#x53D6;&#x603B;&#x662F;&#x4EE5;&#x6570;&#x636E;&#x5757;&#x4E3A;&#x5355;&#x4F4D;&#xFF0C;&#x6240;&#x4EE5;&#x5B58;&#x50A8;&#x4FE1;&#x606F;&#x7684;&#x8BBE;&#x5907;&#x79F0;&#x4E3A;&#x5757;&#x8BBE;&#x5907;&#x3002;&#x5B83;&#x5C5E;&#x4E8E;&#x6709;&#x7ED3;&#x6784;&#x8BBE;&#x5907;&#xFF0C;&#x5982;&#x78C1;&#x76D8;&#x7B49;&#x3002;&#x78C1;&#x76D8;&#x8BBE;&#x5907;&#x7684;&#x57FA;&#x672C;&#x7279;&#x5F81;&#x662F;&#x4F20;&#x8F93;&#x901F;&#x7387;&#x8F83;&#x9AD8;&#xFF0C;&#x4EE5;&#x53CA;&#x53EF;&#x5BFB;&#x5740;&#xFF0C;&#x5373;&#x5BF9;&#x5B83;&#x53EF;&#x968F;&#x673A;&#x5730;&#x8BFB;/&#x5199;&#x4EFB;&#x4E00;&#x5757;&#x3002;</p>
</li>
<li>&#x5B57;&#x7B26;&#x8BBE;&#x5907;&#xFF1A;&#x7528;&#x4E8E;&#x6570;&#x636E;&#x8F93;&#x5165;/&#x8F93;&#x51FA;&#x7684;&#x8BBE;&#x5907;&#x4E3A;&#x5B57;&#x7B26;&#x8BBE;&#x5907;&#xFF0C;&#x56E0;&#x4E3A;&#x5176;&#x4F20;&#x8F93;&#x7684;&#x57FA;&#x672C;&#x5355;&#x4F4D;&#x662F;&#x5B57;&#x7B26;&#x3002;&#x5B83;&#x5C5E;&#x4E8E;&#x65E0;&#x7ED3;&#x6784;&#x7C7B;&#x578B;&#xFF0C;&#x5982;&#x4EA4;&#x4E92;&#x5F0F;&#x7EC8;&#x7AEF;&#x673A;&#x3001;&#x6253;&#x5370;&#x673A;&#x7B49;&#x3002;&#x5B83;&#x4EEC;&#x7684;&#x57FA;&#x672C;&#x7279;&#x5F81;&#x662F;&#x4F20;&#x8F93;&#x901F;&#x7387;&#x4F4E;&#x3001;&#x4E0D;&#x53EF;&#x5BFB;&#x5740;&#xFF0C;&#x5E76;&#x4E14;&#x5728;&#x8F93;&#x5165;/&#x8F93;&#x51FA;&#x65F6;&#x5E38;&#x91C6;&#x7528;&#x4E2D;&#x65AD;&#x9A71;&#x52A8;&#x65B9;&#x5F0F;&#x3002;</li>
</ol>
<h2 id="&#x4E8C;--io-&#x63A7;&#x5236;&#x5668;"><a name="&#x4E8C;--io-&#x63A7;&#x5236;&#x5668;" class="anchor-navigation-ex-anchor" href="#&#x4E8C;--io-&#x63A7;&#x5236;&#x5668;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x4E8C;--io-&#x63A7;&#x5236;&#x5668;" class="plugin-anchor" href="#&#x4E8C;--io-&#x63A7;&#x5236;&#x5668;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x4E8C;  I/O &#x63A7;&#x5236;&#x5668;</h2>
<h3 id="io&#x8BBE;&#x5907;&#x7684;&#x7EC4;&#x6210;"><a name="io&#x8BBE;&#x5907;&#x7684;&#x7EC4;&#x6210;" class="anchor-navigation-ex-anchor" href="#io&#x8BBE;&#x5907;&#x7684;&#x7EC4;&#x6210;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="io&#x8BBE;&#x5907;&#x7684;&#x7EC4;&#x6210;" class="plugin-anchor" href="#io&#x8BBE;&#x5907;&#x7684;&#x7EC4;&#x6210;"><i class="fa fa-link" aria-hidden="true"></i></a>I/O&#x8BBE;&#x5907;&#x7684;&#x7EC4;&#x6210;:</h3>
<ul>
<li>&#x673A;&#x68B0;&#x90E8;&#x4EF6;    (&#x4E3B;&#x8981;&#x6267;&#x884C;&#x5177;&#x4F53;&#x7684;IO&#x64CD;&#x4F5C;,&#x5982;&#x9F20;&#x6807;/&#x952E;&#x76D8;)</li>
<li>&#x7535;&#x5B50;&#x90E8;&#x4EF6;    (&#x4F5C;&#x4E3A;CPU&#x4E0E;&#x8BBE;&#x5907;&#x4E4B;&#x95F4;&#x7684;&#x4E2D;&#x4ECB;)</li>
</ul>
<p>&#x56E0;&#x4E3A;CPU&#x65E0;&#x6CD5;&#x76F4;&#x63A5;&#x64CD;&#x4F5C;I/O&#x8BBE;&#x5907;,&#x6240;&#x4EE5;&#x9700;&#x8981;&#x4E00;&#x4E2A;&#x7535;&#x5B50;&#x90E8;&#x4EF6;&#x4F5C;&#x4E3A;&#x4E24;&#x8005;&#x4E4B;&#x95F4;&#x7684;&#x4E2D;&#x4ECB;,CPU&#x901A;&#x8FC7;&#x64CD;&#x4F5C;&#x7535;&#x5B50;&#x90E8;&#x4EF6;&#x95F4;&#x63A5;&#x64CD;&#x63A7;IO&#x8BBE;&#x5907;</p>
<p>&#x8FD9;&#x4E2A;&#x7535;&#x5B50;&#x90E8;&#x4EF6;&#x5C31;&#x79F0;&#x4F5C; I/O&#x63A7;&#x5236;&#x5668;</p>
<h3 id="io&#x63A7;&#x5236;&#x5668;&#x7684;&#x529F;&#x80FD;"><a name="io&#x63A7;&#x5236;&#x5668;&#x7684;&#x529F;&#x80FD;" class="anchor-navigation-ex-anchor" href="#io&#x63A7;&#x5236;&#x5668;&#x7684;&#x529F;&#x80FD;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="io&#x63A7;&#x5236;&#x5668;&#x7684;&#x529F;&#x80FD;" class="plugin-anchor" href="#io&#x63A7;&#x5236;&#x5668;&#x7684;&#x529F;&#x80FD;"><i class="fa fa-link" aria-hidden="true"></i></a>I/O&#x63A7;&#x5236;&#x5668;&#x7684;&#x529F;&#x80FD;:</h3>
<p><img src="https://gitee.com/zisuu/picture/raw/master/img/20201122212249.png" alt="image-20201122211054189"></p>
<h3 id="io&#x63A7;&#x5236;&#x5668;&#x7684;&#x7EC4;&#x6210;"><a name="io&#x63A7;&#x5236;&#x5668;&#x7684;&#x7EC4;&#x6210;" class="anchor-navigation-ex-anchor" href="#io&#x63A7;&#x5236;&#x5668;&#x7684;&#x7EC4;&#x6210;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="io&#x63A7;&#x5236;&#x5668;&#x7684;&#x7EC4;&#x6210;" class="plugin-anchor" href="#io&#x63A7;&#x5236;&#x5668;&#x7684;&#x7EC4;&#x6210;"><i class="fa fa-link" aria-hidden="true"></i></a>I/O&#x63A7;&#x5236;&#x5668;&#x7684;&#x7EC4;&#x6210;:</h3>
<p><img src="https://gitee.com/zisuu/picture/raw/master/img/20201122212259.png" alt="image-20201122211251264"></p>
<h2 id="&#x4E09;-os-&#x63A7;&#x5236;-io-&#x8BBE;&#x5907;&#x7684;&#x65B9;&#x5F0F;"><a name="&#x4E09;-os-&#x63A7;&#x5236;-io-&#x8BBE;&#x5907;&#x7684;&#x65B9;&#x5F0F;" class="anchor-navigation-ex-anchor" href="#&#x4E09;-os-&#x63A7;&#x5236;-io-&#x8BBE;&#x5907;&#x7684;&#x65B9;&#x5F0F;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x4E09;-os-&#x63A7;&#x5236;-io-&#x8BBE;&#x5907;&#x7684;&#x65B9;&#x5F0F;" class="plugin-anchor" href="#&#x4E09;-os-&#x63A7;&#x5236;-io-&#x8BBE;&#x5907;&#x7684;&#x65B9;&#x5F0F;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x4E09; OS &#x63A7;&#x5236; I/O &#x8BBE;&#x5907;&#x7684;&#x65B9;&#x5F0F;</h2>
<p>I/O &#x63A7;&#x5236;&#x65B9;&#x5F0F; &#x6307;&#x7684;&#x662F;&#x7528;&#x4EC0;&#x4E48;&#x6837;&#x7684;&#x65B9;&#x5F0F;&#x6765;&#x63A7;&#x5236;I/O&#x8BBE;&#x5907;&#x7684;&#x6570;&#x636E;&#x8BFB;/&#x5199;</p>
<p>&#x53EF;&#x7528;&#x4EE5;&#x4E0B;&#x51E0;&#x4E2A;&#x65B9;&#x5F0F;&#x8FDB;&#x884C;&#x5BF9;&#x6BD4;</p>
<ul>
<li>&#x8BFB;&#x5199;&#x6D41;&#x7A0B;</li>
<li>CPU &#x5E72;&#x9884;&#x7684;&#x9891;&#x7387;</li>
<li>&#x6570;&#x636E;&#x4F20;&#x8F93;&#x5355;&#x4F4D;</li>
<li>&#x6570;&#x636E;&#x7684;&#x6D41;&#x5411;</li>
<li>&#x4F18;&#x7F3A;&#x70B9;</li>
</ul>
<h3 id="&#x4E00;-&#x7A0B;&#x5E8F;&#x76F4;&#x63A5;&#x63A7;&#x5236;&#x65B9;&#x5F0F;"><a name="&#x4E00;-&#x7A0B;&#x5E8F;&#x76F4;&#x63A5;&#x63A7;&#x5236;&#x65B9;&#x5F0F;" class="anchor-navigation-ex-anchor" href="#&#x4E00;-&#x7A0B;&#x5E8F;&#x76F4;&#x63A5;&#x63A7;&#x5236;&#x65B9;&#x5F0F;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x4E00;-&#x7A0B;&#x5E8F;&#x76F4;&#x63A5;&#x63A7;&#x5236;&#x65B9;&#x5F0F;" class="plugin-anchor" href="#&#x4E00;-&#x7A0B;&#x5E8F;&#x76F4;&#x63A5;&#x63A7;&#x5236;&#x65B9;&#x5F0F;"><i class="fa fa-link" aria-hidden="true"></i></a>(&#x4E00;) &#x7A0B;&#x5E8F;&#x76F4;&#x63A5;&#x63A7;&#x5236;&#x65B9;&#x5F0F;</h3>
<p>1.&#x8BFB;&#x5199;&#x6D41;&#x7A0B;: </p>
<p><img src="https://gitee.com/zisuu/picture/raw/master/img/20201122214420.png" alt="image-20201122212243362"></p>
<p>2.CPU &#x5E72;&#x9884;&#x7684;&#x9891;&#x7387;:</p>
<p>I/O&#x5F00;&#x59CB;&#x524D;&#x540E;&#x9700;&#x8981;CPU&#x4ECB;&#x5165;,&#x4E14;&#x5728;&#x7B49;&#x5F85;I/O&#x8FC7;&#x7A0B;&#x4E2D;CPU&#x9700;&#x8981;&#x4E0D;&#x65AD;&#x7684;&#x8F6E;&#x8BE2;&#x68C0;&#x67E5;&#x72B6;&#x6001;</p>
<p>3.&#x6570;&#x636E;&#x4F20;&#x8F93;&#x5355;&#x4F4D;</p>
<p>&#x4E00;&#x4E2A;&#x5B57;&#x8282;</p>
<p>4.&#x6570;&#x636E;&#x7684;&#x6D41;&#x5411;</p>
<p>&#x8BFB;&#x64CD;&#x4F5C;: I/O&#x8BBE;&#x5907;-&gt;CPU&#x5BC4;&#x5B58;&#x5668;-&gt;&#x5185;&#x5B58;</p>
<p>&#x5199;&#x64CD;&#x4F5C;:&#x5185;&#x5B58;-&gt;CPU&#x5BC4;&#x5B58;&#x5668;-&gt;IO&#x8BBE;&#x5907;</p>
<p>5.&#x4F18;&#x7F3A;&#x70B9;</p>
<p>&#x4F18;&#x70B9;: &#x7B80;&#x5355;&#x9AD8;&#x6548;</p>
<p>&#x7F3A;&#x70B9;:</p>
<p>&#x56E0;&#x4E3A;CPU&#x9AD8;&#x901F;&#x548C;IO&#x8BBE;&#x5907;&#x7684;&#x4F4E;&#x901F;,&#x5BFC;&#x81F4;CPU&#x4E00;&#x76F4;&#x5728;&#x8F6E;&#x8BE2;,&#x5904;&#x4E8E;&#x5FD9;&#x7B49;&#x72B6;&#x6001;,CPU&#x5229;&#x7528;&#x7387;&#x4F4E;</p>
<h3 id="&#x4E8C;-&#x4E2D;&#x65AD;&#x9A71;&#x52A8;&#x65B9;&#x5F0F;"><a name="&#x4E8C;-&#x4E2D;&#x65AD;&#x9A71;&#x52A8;&#x65B9;&#x5F0F;" class="anchor-navigation-ex-anchor" href="#&#x4E8C;-&#x4E2D;&#x65AD;&#x9A71;&#x52A8;&#x65B9;&#x5F0F;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x4E8C;-&#x4E2D;&#x65AD;&#x9A71;&#x52A8;&#x65B9;&#x5F0F;" class="plugin-anchor" href="#&#x4E8C;-&#x4E2D;&#x65AD;&#x9A71;&#x52A8;&#x65B9;&#x5F0F;"><i class="fa fa-link" aria-hidden="true"></i></a>(&#x4E8C;) &#x4E2D;&#x65AD;&#x9A71;&#x52A8;&#x65B9;&#x5F0F;</h3>
<p>1.&#x8BFB;&#x5199;&#x6D41;&#x7A0B;: </p>
<p>&#x7531;&#x4E8E;I/O&#x8BBE;&#x5907;&#x901F;&#x5EA6;&#x5F88;&#x6162;,&#x56E0;&#x6B64;&#x5728;CPU&#x53D1;&#x51FA;I/O&#x547D;&#x4EE4;&#x540E;,&#x53EF;&#x5C06;&#x5F53;&#x524D;&#x8FDB;&#x7A0B;&#x963B;&#x585E;,&#x52A0;&#x5165;&#x8BE5;IO&#x8BBE;&#x5907;&#x7684;&#x7B49;&#x5F85;&#x961F;&#x5217;&#x4E2D;,&#x8BA9;&#x51FA;CPU&#x7684;&#x4F7F;&#x7528;&#x6743;.&#x5F53;I/O&#x5B8C;&#x6210;&#x540E;,&#x5411;CPU&#x53D1;&#x9001;&#x4E2D;&#x65AD;&#x4FE1;&#x53F7;,CPU&#x68C0;&#x6D4B;&#x5230;&#x8BE5;&#x4FE1;&#x53F7;&#x540E;,&#x8FDB;&#x884C;&#x4E2D;&#x65AD;&#x5904;&#x7406;</p>
<p>&#x5904;&#x7406;&#x4E2D;&#x65AD;&#x8FC7;&#x7A0B;&#x4E2D;,CPU&#x4ECE;I/O&#x5BC4;&#x5B58;&#x5668;&#x8BFB;&#x53D6;&#x6570;&#x636E;&#x5230;CPU&#x5BC4;&#x5B58;&#x5668;,&#x518D;&#x5C06;&#x6570;&#x636E;&#x5199;&#x5165;&#x4E3B;&#x5B58;.</p>
<p>&#x6700;&#x540E;,&#x6062;&#x590D;&#x88AB;&#x963B;&#x585E;&#x7684;&#x7EE7;&#x627F;,&#x7EE7;&#x7EED;&#x6267;&#x884C;&#x7A0B;&#x5E8F;</p>
<p>2.CPU &#x5E72;&#x9884;&#x7684;&#x9891;&#x7387;:</p>
<p>I/O&#x5F00;&#x59CB;&#x524D;&#x540E;&#x9700;&#x8981;CPU&#x4ECB;&#x5165;,&#x7B49;&#x5F85;&#x8FC7;&#x7A0B;&#x53EF;&#x5207;&#x5230;&#x6362;&#x522B;&#x7684;&#x8FDB;&#x7A0B;</p>
<p>3.&#x6570;&#x636E;&#x4F20;&#x8F93;&#x5355;&#x4F4D;</p>
<p>&#x4E00;&#x4E2A;&#x5B57;&#x8282;</p>
<p>4.&#x6570;&#x636E;&#x7684;&#x6D41;&#x5411;</p>
<p>&#x8BFB;&#x64CD;&#x4F5C;: I/O&#x8BBE;&#x5907;-&gt;CPU&#x5BC4;&#x5B58;&#x5668;-&gt;&#x5185;&#x5B58;</p>
<p>&#x5199;&#x64CD;&#x4F5C;:&#x5185;&#x5B58;-&gt;CPU&#x5BC4;&#x5B58;&#x5668;-&gt;IO&#x8BBE;&#x5907;</p>
<p>5.&#x4F18;&#x7F3A;&#x70B9;</p>
<p>&#x4F18;&#x70B9;: CPU&#x4E0D;&#x518D;&#x5FD9;&#x7B49;,&#x63D0;&#x9AD8;&#x4E86;CPU&#x7684;&#x5229;&#x7528;&#x7387;</p>
<p>&#x7F3A;&#x70B9;:</p>
<p>&#x6570;&#x636E;&#x7684;&#x4F20;&#x8F93;&#x4ECD;&#x7136;&#x9700;&#x8981;&#x901A;&#x8FC7;CPU&#x8FD9;&#x4E2A;&#x4E2D;&#x4ECB;,&#x9891;&#x7E41;&#x7684;&#x4E2D;&#x65AD;&#x5904;&#x7406;&#x4F1A;&#x6D88;&#x8017;&#x8F83;&#x591A;&#x7684;CPU&#x65F6;&#x95F4;</p>
<h3 id="&#x4E09;dma&#x65B9;&#x5F0F;"><a name="&#x4E09;dma&#x65B9;&#x5F0F;" class="anchor-navigation-ex-anchor" href="#&#x4E09;dma&#x65B9;&#x5F0F;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x4E09;dma&#x65B9;&#x5F0F;" class="plugin-anchor" href="#&#x4E09;dma&#x65B9;&#x5F0F;"><i class="fa fa-link" aria-hidden="true"></i></a>(&#x4E09;)DMA&#x65B9;&#x5F0F;</h3>
<p>1.&#x4E0E;&#x4E2D;&#x65AD;&#x9A71;&#x52A8;&#x65B9;&#x5F0F;&#x76F8;&#x6BD4;,DMA(direct momery access ,&#x76F4;&#x63A5;&#x5B58;&#x50A8;&#x5668;&#x5B58;&#x50A8;),&#x4E3B;&#x8981;&#x6709;&#x4EE5;&#x4E0B;&#x7684;&#x6539;&#x8FDB;:</p>
<ul>
<li>&#x6570;&#x636E;&#x4F20;&#x8F93;&#x5355;&#x4F4D;&#x6539;&#x4E3A;&apos;&#x5757;&apos;</li>
<li>&#x6570;&#x636E;&#x65E0;&#x9700;&#x901A;&#x8FC7;CPU,&#x76F4;&#x63A5;&#x4ECE;&#x8BBE;&#x5907;&#x5230;&#x5185;&#x5B58;</li>
<li>CPU&#x53EA;&#x5728;&#x4F20;&#x8F93;&#x4E00;&#x4E2A;&#x6216;&#x591A;&#x4E2A;&#x5757;&#x7684;&#x5F00;&#x59CB;&#x6216;&#x7ED3;&#x675F;&#x65F6;&#x624D;&#x9700;&#x5E72;&#x9884;</li>
</ul>
<p><img src="https://gitee.com/zisuu/picture/raw/master/img/20201122213556.png" alt="image-20201122213553137"></p>
<p>2.DMA&#x63A7;&#x5236;&#x5668;</p>
<p><img src="https://gitee.com/zisuu/picture/raw/master/img/20201122214411.png" alt="image-20201122213718097"></p>
<p>3.&#x7F3A;&#x70B9;:</p>
<p>CPU&#x4E00;&#x6761;&#x6307;&#x4EE4;,&#x53EA;&#x80FD;&#x8BFB;&#x5199; &#x4E00;&#x4E2A;&#x6216;&#x591A;&#x4E2A;&#x8FDE;&#x7EED;&#x7684;&#x6570;&#x636E;&#x5757;,</p>
<p>&#x82E5;&#x9700;&#x8981;&#x79BB;&#x6563;&#x5B58;&#x50A8;&#x7684;&#x6570;&#x636E;&#x5E93;,&#x5219;&#x9700;&#x8981;&#x53D1;&#x51FA;&#x591A;&#x6761;CPU&#x6307;&#x4EE4;</p>
<h3 id="&#x56DB;-&#x901A;&#x9053;&#x63A7;&#x5236;&#x65B9;&#x5F0F;"><a name="&#x56DB;-&#x901A;&#x9053;&#x63A7;&#x5236;&#x65B9;&#x5F0F;" class="anchor-navigation-ex-anchor" href="#&#x56DB;-&#x901A;&#x9053;&#x63A7;&#x5236;&#x65B9;&#x5F0F;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x56DB;-&#x901A;&#x9053;&#x63A7;&#x5236;&#x65B9;&#x5F0F;" class="plugin-anchor" href="#&#x56DB;-&#x901A;&#x9053;&#x63A7;&#x5236;&#x65B9;&#x5F0F;"><i class="fa fa-link" aria-hidden="true"></i></a>(&#x56DB;) &#x901A;&#x9053;&#x63A7;&#x5236;&#x65B9;&#x5F0F;</h3>
<p>&#x901A;&#x9053;&#x63A7;&#x5236;&#x65B9;&#x5F0F;&#x662F;&#x4E3A;&#x4E86;&#x89E3;&#x51B3;DMA&#x65B9;&#x5F0F;&#x8FDE;&#x7EED;&#x5B58;&#x50A8;&#x7684;&#x95EE;&#x9898;</p>
<p>1.&#x8BFB;&#x5199;&#x6D41;&#x7A0B;:</p>
<p><img src="https://gitee.com/zisuu/picture/raw/master/img/20201122214404.png" alt="image-20201122214112481"></p>
<p>&#x4E5F;&#x5373;,CPU&#x7ED9;&#x51FA;&#x4E00;&#x4E9B;I/O&#x6307;&#x4EE4;, &#x4FDD;&#x5B58;&#x5230;&#x4EFB;&#x52A1;&#x6E05;&#x5355;&#x4E2D;,&#x901A;&#x9053;&#x4E00;&#x4E2A;&#x4E2A;&#x5B8C;&#x6210;</p>
<p>2.CPU&#x5E72;&#x9884;&#x9891;&#x7387;:&#x6781;&#x4F4E;,&#x53EA;&#x9700;&#x7ED9;&#x51FA;&#x4EFB;&#x52A1;,&#x63A5;&#x6536;&#x4E2D;&#x65AD;&#x8BF7;&#x6C42;</p>
<p>3.&#x5355;&#x4F4D;:&#x4E00;&#x7EC4;&#x6570;&#x636E;&#x5757;</p>
<p>4.&#x53EF;&#x4EE5;&#x628A;&#x901A;&#x9053;&#x7406;&#x89E3;&#x4E3A;&apos;CPU&#x7684;&#x4EE3;&#x7406;/&#x5C0F;&#x578B;CPU&apos;</p>
<h2 id="&#x56DB;-io-&#x5B50;&#x7CFB;&#x7EDF;&#x7684;&#x5C42;&#x6B21;&#x7ED3;&#x6784;"><a name="&#x56DB;-io-&#x5B50;&#x7CFB;&#x7EDF;&#x7684;&#x5C42;&#x6B21;&#x7ED3;&#x6784;" class="anchor-navigation-ex-anchor" href="#&#x56DB;-io-&#x5B50;&#x7CFB;&#x7EDF;&#x7684;&#x5C42;&#x6B21;&#x7ED3;&#x6784;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x56DB;-io-&#x5B50;&#x7CFB;&#x7EDF;&#x7684;&#x5C42;&#x6B21;&#x7ED3;&#x6784;" class="plugin-anchor" href="#&#x56DB;-io-&#x5B50;&#x7CFB;&#x7EDF;&#x7684;&#x5C42;&#x6B21;&#x7ED3;&#x6784;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x56DB; I/O &#x5B50;&#x7CFB;&#x7EDF;&#x7684;&#x5C42;&#x6B21;&#x7ED3;&#x6784;</h2>
<p>&#x4E3A;&#x4E86;&#x4F7F;&#x590D;&#x6742;&#x7684;I/O&#x8F6F;&#x4EF6;&#x5177;&#x6709;&#x6E05;&#x6670;&#x7684;,&#x53EF;&#x79FB;&#x690D;&#x7684;&#x7ED3;&#x6784;,&#x5728;I/O&#x8F6F;&#x4EF6;&#x4E2D;&#x666E;&#x904D;&#x91C7;&#x7528;&#x4E86;&#x5C42;&#x6B21;&#x5F0F;&#x7684;&#x7ED3;&#x6784;</p>
<p>&#x4E0A;&#x5C42;&#x7684;&#x7ED3;&#x6784;&#x53EA;&#x662F;&#x8C03;&#x7528;&#x4E0B;&#x5C42;&#x7684;&#x7ED3;&#x6784;,&#x5177;&#x4F53;&#x7684;&#x5B9E;&#x73B0;&#x53EA;&#x7531;&#x4E0B;&#x5C42;&#x5B9E;&#x73B0;</p>
<p><img src="https://gitee.com/zisuu/picture/raw/master/img/20201122215212.png" alt="image-20201122215140686"></p>
<h3 id="&#x4E00;-&#x7528;&#x6237;&#x8F6F;&#x4EF6;&#x5C42;"><a name="&#x4E00;-&#x7528;&#x6237;&#x8F6F;&#x4EF6;&#x5C42;" class="anchor-navigation-ex-anchor" href="#&#x4E00;-&#x7528;&#x6237;&#x8F6F;&#x4EF6;&#x5C42;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x4E00;-&#x7528;&#x6237;&#x8F6F;&#x4EF6;&#x5C42;" class="plugin-anchor" href="#&#x4E00;-&#x7528;&#x6237;&#x8F6F;&#x4EF6;&#x5C42;"><i class="fa fa-link" aria-hidden="true"></i></a>(&#x4E00;) &#x7528;&#x6237;&#x8F6F;&#x4EF6;&#x5C42;</h3>
<p><img src="https://gitee.com/zisuu/picture/raw/master/img/20201122215658.png" alt="image-20201122215316323"></p>
<h3 id="&#x4E8C;-&#x8BBE;&#x5907;&#x72EC;&#x7ACB;&#x6027;&#x8F6F;&#x4EF6;"><a name="&#x4E8C;-&#x8BBE;&#x5907;&#x72EC;&#x7ACB;&#x6027;&#x8F6F;&#x4EF6;" class="anchor-navigation-ex-anchor" href="#&#x4E8C;-&#x8BBE;&#x5907;&#x72EC;&#x7ACB;&#x6027;&#x8F6F;&#x4EF6;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x4E8C;-&#x8BBE;&#x5907;&#x72EC;&#x7ACB;&#x6027;&#x8F6F;&#x4EF6;" class="plugin-anchor" href="#&#x4E8C;-&#x8BBE;&#x5907;&#x72EC;&#x7ACB;&#x6027;&#x8F6F;&#x4EF6;"><i class="fa fa-link" aria-hidden="true"></i></a>(&#x4E8C;) &#x8BBE;&#x5907;&#x72EC;&#x7ACB;&#x6027;&#x8F6F;&#x4EF6;</h3>
<p><img src="https://gitee.com/zisuu/picture/raw/master/img/20201122215701.png" alt="image-20201122215422158"></p>
<h3 id="&#x4E09;-&#x8BBE;&#x5907;&#x9A71;&#x52A8;&#x7A0B;&#x5E8F;"><a name="&#x4E09;-&#x8BBE;&#x5907;&#x9A71;&#x52A8;&#x7A0B;&#x5E8F;" class="anchor-navigation-ex-anchor" href="#&#x4E09;-&#x8BBE;&#x5907;&#x9A71;&#x52A8;&#x7A0B;&#x5E8F;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x4E09;-&#x8BBE;&#x5907;&#x9A71;&#x52A8;&#x7A0B;&#x5E8F;" class="plugin-anchor" href="#&#x4E09;-&#x8BBE;&#x5907;&#x9A71;&#x52A8;&#x7A0B;&#x5E8F;"><i class="fa fa-link" aria-hidden="true"></i></a>(&#x4E09;) &#x8BBE;&#x5907;&#x9A71;&#x52A8;&#x7A0B;&#x5E8F;</h3>
<p><img src="https://gitee.com/zisuu/picture/raw/master/img/20201122215652.png" alt="image-20201122215606112"></p>
<h3 id="&#x56DB;-&#x4E2D;&#x65AD;&#x5904;&#x7406;&#x7A0B;&#x5E8F;"><a name="&#x56DB;-&#x4E2D;&#x65AD;&#x5904;&#x7406;&#x7A0B;&#x5E8F;" class="anchor-navigation-ex-anchor" href="#&#x56DB;-&#x4E2D;&#x65AD;&#x5904;&#x7406;&#x7A0B;&#x5E8F;"><i class="fa fa-link" aria-hidden="true"></i></a><a name="&#x56DB;-&#x4E2D;&#x65AD;&#x5904;&#x7406;&#x7A0B;&#x5E8F;" class="plugin-anchor" href="#&#x56DB;-&#x4E2D;&#x65AD;&#x5904;&#x7406;&#x7A0B;&#x5E8F;"><i class="fa fa-link" aria-hidden="true"></i></a>(&#x56DB;) &#x4E2D;&#x65AD;&#x5904;&#x7406;&#x7A0B;&#x5E8F;</h3>
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